Nonodorous phenolated soap



Patented May 18. 1926.

UNITEDTSTATES PATENT OFFICE.

No Drawing.

The derivatives of carbolic acid and other phenols (andphenol-derivatives) with higher acids, containing more than eleven atomsof carbon, have little or practically no phenolodor at all,particularly, the phenol-esters of such fatty acids, as palmitic,stearic and oleic (and their mixtures), as occur in animal and vegetablefats and oils. This lack of odor, coupled with their freedom fromirritating effect, which the free phenols possess, has made them veryvaluable as antiseptic constituents, in salves and ointments, asdescribed in my Patent No. 938,614 of 1909.

I have now found that these phenol-esters may also be embodied in soapsfor various uses, the alkalinity of the same, if acting at all,not'producing reactions cansin the objectional odor of the free pheno toreturn. The value of imparting the antiseptic properties of phenols(carbolic acid, 0-, mand p-cresol, p-chlor-mcresol, xy1enol-, etc.) tosoaps, particularly, where an antiseptic action is desired isselfevident and has, heretofore, been well recognized, but, for thereason of the objectionable properties of the free phenols, as to odorand irritating effect on the skin, has never found broad application. Byusing in soaps the above-named phenoLcompounds, these objections arereadil overcome. Furthermore, the same will, in most cases, much bettermix with the soapy material and also have greater aflinity for the skin,than the free phenols.

As an example of my invention, I, herewith, describe a shaving cream.Any ordinary shaving cream is mixed with about 3% of meltedphenyl-stearate. When the prodnot has been well stirred in, the cream isready for use. A white cream, aromatized with any flavor desired, can beobtained, which is free from the carbolic acid odor and absolutelynon-irritant to the skin. The

product foams well and is most readily taken by the skin, so that acloser shave is possible, the latter evidently due to the fatlike natureof the phenyl-stearate it contains. Amounts and nature of thephenolcompoundas, for example, various henolesters, cresol-esters etc.of stea'ric, o1e1c, palmitic and other saturated and unsaturatedApplication filed March 15, 1923. Serial No. 625,414.

acids forming such phenol-esters and having more than twelve atoms ofcarbon, principally, including also those acids as occur in the naturalfats and oils, may be variously modified, as well as method ofpreparation. Additions of perfumes, medicaments (borax, lanolin, etc.)may be made. The antiseptic property of a shaving cream is particularlyvaluable, as the danger from infections from cuts and instruments isalways present. The healing-effect due to its phenol-compound, which isfinely divided and spread over the skin in the soapy ingredients, whichalso tend to allay the bleeding, in case of a cut, coupled with thepain-allaying and soothing action of such phenol, make such additionspartlcularly desirable in a shaving-cream and soap. If a more powerfulbleeding stop is required, a small amount of a styptic may beincorporated in the preparation. Examples of suitable styptics for thispurpose are adrenalin or epinephrin, haemolytic ferments andthromboplastine.

Soaps, both solid, creamy and liquid are readil used in conjunction withthe abovename phenol-compounds. 'Oleic-acidphenol-esters are indicated,where a liquid (lysol-like, etc.) soapy material, possessing antisepticproperties is desirable. Color may be added. In most cases, it will benecessary to simply add the phenol-ester etc. to the soap-stock in aliquid (just melted) condition, best, at a temperature as low as pos- 1sible to allow thorough mixing and even distribution. Mixtures ofphenol-compounds may also be used. Other ingredients used in soaps(shaving soaps, etc.) may be added.

The term: phenol-ester used in the following claims designates theproduct of reaction between the organic acid (acids) and the phenol(phenols) coming under the scope of this invention, in its pure form andor in mixture, as the case may be.

Throughout the claims the expression a shaving preparation containingsoap is usedto include shaving preparations of various consistencies, e.g. solid soap, paste, etc.

I claim :-r

1. A soap containing a phenol-ester of an organic fatty acid having morethan eleven carbon atoms.

2. A soap containing a phenol-ester of an 1 rec organic fatty acidhaving more than eleven more than eleven carbon atoms and adrecarbonatoms, the ester being in a substannalin. 10 tially pure state and theproduct being sub- 5. A shaving pre aration containing soap, stantiallyfree from the odor of the free phephenyl-stearate an a styptic.

5 n01. 6. A shaving preparation containing soap,

3. A soap containing phenyl-stearate. phenyl-stearate and adrenalin. 4.A shaving preparation containing soap,

' a phenol-ester'of an organic fatty acid having NATHAN SULZBERGER.

